RE: Migrating VMware instances

I would think it's next to impossible to migrate vmware instances simply
because of Vmware's architecture. Vmware scans the exucutable VM pages of
the virtual machine ahead of execution and replaces call to ring 0 of the
CPU with system calls and pointers to it's own software. I doubt if a Vmware
machine would be able to run on the remote node after migration. 

It's a much better approach to have openMosix run inside Xen virtual
machines and migrate those around when required. 

Moshe 

-----Original Message-----
From: openmosix-general-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
[mailto:openmosix-general-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Dave
Pippenger
Sent: Thursday, January 12, 2006 1:35 PM
To: openmosix-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: RE: [openMosix-general] Migrating VMware instances


I would only be curious if you had any level of success having vmware
instances migrate on an OM cluster. I'm going to install your srpms later
today on my dev cluster, but if you can tell me it's not going to get me
what I want I won't bother.

Dave Pippenger


On Thu, 12 Jan 2006, Schaad,John G - TOC wrote:

> Bruce,
> Yes, that is it.  Let me know if you have any questions about it.
> --John
>
> -----Original Message-----
> From: Bruce Knox [mailto:[email protected]]
> Sent: Thursday, January 12, 2006 9:42 AM
> To: Schaad,John G - TOC
> Cc: openmosix-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> Subject: RE: [openMosix-general] Migrating VMware instances
>
>
> John, I just followed the directories (with some guessing) and found:
> ftp://ftp.bpa.gov/pub/software/openMosix/
> There are several VMware HowTo documents:)  Bruce
>
>>>> "Schaad,John G - TOC" <jgschaad-BA9cS41/[email protected]> 1/12/2006 11:27:22 AM >>>
> Hi, Bruce,
>
> I believe that information is still available on our External FTP Site.
However, we can no longer access it from our Internal Network.  I will have
to go home to check it out.  I do know that the directory structure on it
was re-arranged not too long ago, so the ftp link below would no longer be
correct.
>
> I will go home later today to check it, and then come back and "reply to
all" with the information.
>
> If for some reason that no longer works, I will try to find another way to
get the information out and available to everyone.
>
> Best Wishes,
> --John
>
> -----Original Message-----
> From: Bruce Knox [mailto:[email protected]]
> Sent: Thursday, January 12, 2006 6:32 AM
> To: openmosix-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org; Dave Pippenger
> Cc: Schaad,John G - TOC
> Subject: Re: [openMosix-general] Migrating VMware instances
>
>
> Dave, John Schaad is jgschaad at bpa.gov Bruce
>
>>>> Dave Pippenger <[email protected]> 1/11/2006 9:56 PM >>>
>
> In my searches for an answer I turned up this old post
>
> http://sourceforge.net/mailarchive/message.php?msg_id=9719541
>
> It refers to a magical ftp site that no longer seems to have the 
> advertised content. The poster was not the creator of the content and 
> the email address protection prevents me from asking the poster if he 
> still has the content. So does anyone have a copy of the howto docs 
> and custom source that used to live at
>
> ftp://ftp.bpa.gov/downloads/software/openMosix/
>
> Dave Pippenger
>
>
> On Thu, 5 Jan 2006, Dave Pippenger wrote:
>
>>
>> If anyone is curious about my reasoning for wanting to do this, I 
>> have a number of dev systems running on VMs. Each server uses 
>> different levels of CPU at any given time depending on the 
>> development cycle of each group. It ends up being a very large pain 
>> to manage 100 or so of these VMs spread across 30 dual proc boxes and 
>> keep two people from butting heads with the cpu on a given box. OM 
>> seemed to be a pretty good answer to my issue allowing me to just 
>> provision everyone on the master node and have OM deal with the 
>> cpu/memory distribution. My VMs are all linux, so I'm not tied to 
>> VMware if anyone knows of another project that works well with OM. I 
>> didn't see any interesting hints that bochs or plex86 would work, and I
know due to kernel hooks UML is pretty much not an option.
>>
>> The FAQ and vague reports from other users on the list running VMware 
>> under OM is what inspired me to believe it was a workable setup.
>>
>> Dave Pippenger
>>
>>
>> On Thu, 5 Jan 2006, Dirk Eddelbuettel wrote:
>>
>>>
>>>  Dave,
>>>
>>>  On 5 January 2006 at 14:05, Dave Pippenger wrote:
>>> |  I read through the FAQ and came across the entry for VMware that  
>>> | indicated  openmosix owuld load balance several instances of 
>>> | VMware. When I tried  to  do this using vmware-gsx I was faced 
>>> | with the VMware processes being  locked on the home node with 
>>> | these flags (monkey, mmap_dev, clone_vm,  direct_io). I tried 
>>> | altering the VM config by removing devices like  floppy  that 
>>> | could have lead to locking, but in the end I was unable to get any  
>>> | level of success.
>>> |
>>> |  I'm running a 2.4.27 based om kernel using the migshm patches. My 
>>> | VMware  is somewhat dated being version 3.1.0 but I have seen no 
>>> | indication of a  particular version that was better at migration 
>>> | than any other. If  anyone  who has had positive experience with 
>>> | this could let me know what kind of  config they were using it 
>>> | would be of great assistance.
>>>
>>>  I can't offer much help. I tried something similar recently using 
>>> the  newer  VMware Player, but didn't get the 2.4.27 oM kernel to 
>>> migrate processes  between the two instances I was running.  I 
>>> posted a few notes on the  quantian-general list about that.
>>>
>>>  So if anybody has pointers or leads on openMosix inside VMware, I'd 
>>> like  to  hear them too.
>>>
>>>  Regards, Dirk
>>>
>>>  --
>>>  Hell, there are no rules here - we're trying to accomplish something.
>>>                                                   -- Thomas A. 
>>> Edison
>>>
>>
>>
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